Scribing instrument



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H. H. JIEPSEN SCRIBING INSTRUMENT lFiled Oct. 3, 1921 3 Sheets-Sheet 1 @QL 9, m3. Mmm@ H. H. JEIPSEN SCHIBING INSTRUMENT Filed Oct. 5, 1921 3 Sheets-Sheet 2 F/EZ A? 27 so [HMM M f7- .JEPEEJV By 1 ad: 4 A V,

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H. H, JEPSEN SCRIBING INSTRUMENT Filed'oct, l5, 1921 s sheets-Sheet 3 Patented @et 9, i923..

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SCRIBING- INSTRUMENT.

To all inkom it' may concern.'

Be it lmoivn that l, 'Hans H. Jnrsniv, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invente ed new and useful Improvements in Scribing instruments, of which the following is specification.

The present invention relates toy improvements in scribing instruments and resides in the provision "of -a'comparatively simple instrument by means olr which figures of various sizes and shapes may be effectively wand accurately drawn.

T he primary object of the invention is to provide a 'scribing instrument of the characterdescribed which will permit of the scribing ot iigures and outlines of such formations and shapes as heretofore have required the use of several different instruments, the said instrument being capable ot adjustment and rearrangement in a simple and effective manner to provide for accurately scribing` elliptical figures, circles and other irregular gures and vmay Vbe effectively used in pattern ivorlr or in outlining sheet metal forms.

The invention further consists in the `novel arrangement, inter-relation, combination and association of a plurality of specially constructed parts which `comprise an instrument Which will be compact, capable of scribing in places ordinarily inaccessible with instruments heretofore employed, and which Will have a `greater variety of uses than the ordinary scribing'instrument.

'lhe invention possesses other advantages and features some ot' which, with the forecoing will be set `lor'th at length in the tol lowing description Where I shall outline in full that form of the invention which l have 'selected for illustration in the drawings accompanyingr and forming a part of the present specification. ln said drawings l have shown one form of the construction of my invention, but it is to be understood that I do `not limit myself'to such form since the invention as expressed in the claims may beembodied in a plurality ot.' forms. i

Referring to the drawings:

Fig. l is a topjplan view of a scribing instrument in accorda-nce with the presentV Serial No. 504,966.

invention, vthe instrument being larranged for scribing elliptical figures; Fig. 2, is side elevation of the instrument shovvn` in `Fig. l; Fig. 3, is a diagrammatic view illustrating types o'felliptical figures Which may vbe scribed With the instrument arranged as shown in Figs. l and-2; Fig. Il, is a sidee-leva'- tion of the instrument adjustably mounted for scribi-ng gures of a dilierent character; Fig. 5, is a diagrammatic viewo'fthe'types'oif i'igures Which may be scribed `with the device arranged as shown in Fig. a; F ig. 6, is a side elevation of the instrument as arranged to scribe another form of ligure; Fig. 7, is a diagrammatic vievvoit the tigures scribed With the device arranged as shown in F ig. 6; F ig. 8, is a side elevation of the instrument reversed and arranged for scribing Within the contines oli Athe instrument itself.

Referring to the drawings wherein l have -illustrated the preferred embodiment of my invent-ion, l designates a frame or body portion which is preferably annular and supported upon a plurality, vpreferably three, leg devices 2, the leg devices being mounted so as to effectively `support the trame Without .interfering With the ,movement of the scribing device, which will be later described.

Each of the leg devices comprises 'a right angular or l. shaped member 3, 'one portion of Which is vertically` and rotatably mounted in an opening `formed inthe trame l. The'other portion of the right angular member 3 extends `horizontally and adjacent to its outer end supports an upright leg '5. Thus `the members 3 maybe turned so 'that the legs 5 Will be ydisposed in inwardly oil"- set relation to the frame or `disposed out-- `Wardly to one side of the frame, depending upon the vscribing operation to be carried out.

Mounted in opposite upstanding members '6 and 7,` carried on the upper side of the frame l, are tivo spaced (parallel rods '8, ivli'ichyeXtend transversely across the center of the frame. Similar lrods 9 are mounted in members 10,` which depend from the under side of the frame, in `such manner that the rods 8 and 9 extend at rightA angles to one another with their intersection -at the center of the frame. Mounted upon the lower rods 9 is a slide member 11 having cpenings 12 therethru, in which said rods 9 are received. A bar or link 13 is secured by a 4screw 14 at one end to a rotatable member 15 which extends upwardly from the slide member 11 and the other end of the bar 13 is received in an open slot 16 extending thru a lower revolvable part 16 of a slide member 17, which member is slidably mounted upon the upper rods 8. rEhe bar 13 is preferably rectangular in cross section and the slot 16 is likewise formed so as to slidably receive the bar 13. A set screw 18 is carried by the part 16 and is adapted to engage the bar 13 to hold the same in adjusted position in the slot 16. The slide member 17 is provided with horizontal openings 19 thru which the bars 8 extend. The slideV member 17 supports a member 20 upon its upper side and a pin 21 carried by the lower part 16 extends thru the member 17 Vinto, an opening 22 in said member 20. A screw 23 extends laterally into the member 2O and thru the pin 21 and secures the member 20 and part16 for corresponding rotation. On opposite ends of the slide member 17 there are provided set screws 2e which are adapted te engage the bars 8 so. as to hold the slidel member in adjusted position when desired..

An opening 25 extends horizontally thru the upper portion of the member 2O and slidably receives a scribing arm 26, which latter extends horizontally for a considerable distance beyond the frame 1. By means of a set screw 27 carried on the upper side of the member 20, the arm 26 .may be Yheld in the desired adjusted position. An

upright slide member 28 is formed adj acontv its upper end with an opening 29 thru which the arm 26 extends. By means of a set screw 30, the slide member 28 may be held in adjusted position. The lower end of the member 28 terminates at a point spaced slightly above the lower ends of the legs 5 and is provided with a transverse opening 31 in which is mounted an arm 32, upon one end of which arm a scribing member 33 is secured. The arm 32 extends horizontally and at right angles `to the slide member 28, it being held in adjusted position by means of a set screw 34 on the member 28. The arm 32 may be mounted so as to extend from the member 28, either inwardly towards the frame or outwardly away from the frame. The openings 29 and 31 in the member 28 are preferably of angular form so as correspond to the cross sectional formation of the arms 26 and 32, whereby the said arms are limited to horizontal sliding movement with relation to the member- 28. Then the device is thusassembled the legs 23 are disposed in inwardly off-set relation to the frame, as shown in Fi'g. 2, whereby the Scribing somewhat may be carried out to peints from the beneath and spaced inwardly outer confines of the frame.

With the device arranged as shown in Figs. 1 and 2, the scribingof elliptical figures of various dimensions and sizes may Y scribed and as these members are adjusted away from alinement' the length of the ellipse will increase. The adjustment permitted of the arms 26 and 32 and slide member 28 provides for regulatingv the sizes and sha-pes of the elliptical figuresto be scribed, in an effective and accurate manner.

Mounted upon the ends of the rods V8 adjacent to the upstanding member 7 is a block 35 having an arm 36 rotatably mounted thereon by suitable. means, as shown at 37. The .arm 36 extends horizontally above the member 7 and rods 8 and supports a slide member 38 having an open groove 39 in'its under side, which groove receives said arm. A setV screw 40 provides for holding lthe said member 38 in position on the arm 36. A revolvable member 4,-1 is mounted upon the slide member 38 and is provided with a horizontal opening 42 extending therethru and with a set screw 13, the inner end ofv which screw is adapted to project into said opening. l/Vhen it is desired to scribe figures not capable of being scribed with the arrangement of the device as shown in Figs. 1 and 2, and also so that the figures may embody ogee curves in certain instances, the inner endof the ,depending upon thecharacter of the figures to be scribed, V,by tightening the set screw 43, but is allowed to slide freely thru t-he member 20, which member 20 is held against movement on the rods 8 by tightening the set screws 24 so as to set the slide 17 on said rods in the selected position. With the device thus arranged, the scribing may be carried out for the forming of figures hereinbefore mentioned', the arm 36 producing an eccentric motion in the ltravel of the scribing point 33, Thelink or arm 13 is detached when the. above arrangement is effected. It will `thus be seen that the arm 13 when removed may take the place of the arm 36 and require the use of only one arm orvlink instead of two, if so desired, inasmuch as the links 13 and 36 are of the same construction and are removably mounted in place. y

Another arrangement providing for the scribing of an entirely different hind of tigure or figures is illustrated in F ig. 6 of the drawings, wherein the arm 26 is reversed so that the members 28 and 32 and scribing pointk 33 are on the opposite side ot the trame from that shown in Figs. l, 2 and 3, the free end of the arm being extended first thru the opening l2 and Athen thru the opening? in the member 20, the arm being then 'set in the member 4l by a set screw a3 and allowed to move freely in the member 20. The arm 32 may be arranged to extend the scribing point 33 either beneath the trame or laterally outside of the latter, depending upon the scribing to be done and by manipulating the several adjustments, the scribing oi' a greater variety of gures of different characters than is possible with other arrangements of this device, may be edectively, accurately and easily carried out. With reference to Fig. 8, it will be seen that the device as a Whole, is inverted. This will provide for scribing of elliptical iigures beneath or under the frame L ln arranging the device in this manner, the leg devices 2 are removed, together with the arm 26, and the frame is turned upside down, the right angle members 3 being inverted inthe openings 4 in the then, under side, of the said frame, said openings being extended entirely thru the frame. The legs are then preferably, turned so as tobe disposed outwardly to one side of the frame and the arm 32 is inserted in the block or member 20, Which then depends from the frame. With the arm and scribing point 33 thus arranged, the scribing of small elliptical iigures, which otherwise could not be scribed with this device in its normal arrangement, may be effectively carried out.

lt will thus be seen that I have provided a comparatively simple, compact and inexpensive instrument Which may be used to scribe figures of varying type such as would ordinarily require the employment of several scribing instruments, it only being necessary to make a few simple adjustments and change the arrangement of the parts of the device in order to provide for the use of the device as above noted. The construction of the various elements of the device is such that the said elements may be readily removed and rearranged or adjusted so that an accurate and easy scribing may be carried out in all instances.

The figures 8, 5 and 7 show different kinds of figures Which may be scribed with the device of this invention. The ellipsis shown in Fig. 3 and ellipsis of diiiierent Jrormation may be scribed with the device arranged as shown in Figs. l and 2 and the figures of Fig. 5 illustrate the various forms of scribranged as shown in Fig. (i. While iigures 3,75 and i", respectively, illustrate elliptical forms of scribing Which may be accom'- plished,`it is to be understood that the inventionl is not limited to these forms but may be utilized for scribing a variety or entirely different ellipsis and corresponding iigures.

'I claim:

l. A scribing instrument embodying in its construction an annular trame1 guide rods supported by and extending across said frame, slide members movable upon said rods, an arm slidable longitudinally in one of said slide members, a slide member mounted upon said arm and depending therefrom, a scribing point adjustablyv connected With said last named slide member, and angular legs pivoted on the frame and arranged so as to be disposed in inwardly or outwardly od-set relation to the outer perimeter of the frame.

2. A scribing instrument embodying in its construction a frame, guide rods supported by said frame, slide members movable upon said rods, a bar connected at one end with `one slide member and adjustably connected at its other end with the other slide member, a rotary member mounted upon the lastnamed slide member and having an opening therein, an arm movable longitudinally thru said opening7 a slide membermovable upon said arm, a scribing point adjustably supported upon said last named slide member and legs capable of being mounted upo-n said frame so as to support the same in normal and"inverted positions, with the elements of said instrument spaced above the vvorlr when the j frame is in either position.

3. A scribing instrument embodying in its construction a trame, a plurality ot guide rods extending in diderent directions upon said trame, a slide member movable upon certain of said rods, a slide member movable upon others of said rods, a member rotatable upon the second named slide member, a scribing arm adjustably supported upon said rotatable member, a scribing point adjustably connected with said arm and a single linlr pivoted on the first named slide member and secured directly to the rotatable member.

4. A scribing instrument embodying in its construction a frame, a plurality of guide rods extending in diierent directions upon said frame, a slide member movable upon certain of said rods, a slide member movable upon others of said rods, a member rotatable upon the second named slide member, a scribing arm adjustably supported upon said rotatable member, a scribing point lOO adjustably connected with said arm',l a single link pivoted to the first named slide mem ber and secured directly to the rotatable member and means for adjustably securing said link to said rotatable member.

5. A scribing instrument embodying in its construction a frame, guide rods extending in different directions across said frame,

Varms pirated upon said frame so as to be extended inwardly towards the center thereoi or outwardly away `from the outer sides of the frame, supporting legs carried upon the outer extremities or' said arms, slide Amembers mounted for sliding movement on said rods, a rotatable member on one of said slide members, a link rigidly secured to said rotatablemember and pivoteddirectly on the other slide member, a scribing point and means for supporting said scribing point and being adjustably connected With said rotatable member.

6. Av scribing,- instrument embodying in its construction a frame, guide members eX- tending in different directions across said Jframe, slide members movable upon ythe guides, an arm slidable longitudinally in one of the slide members, a scribing point adjustable upon said arm7 attaching means fixed uponsaid frame, a link pivotally connected with said attaching means and means adjustable on said link for connecting the free end of thelink to said arm.

HANS H. JErsEN. 

